66076473720 has 128 divisors (see below), whose sum is σ = 200460536640. Its totient is φ = 17422417920.

The previous prime is 66076473713. The next prime is 66076473739. The reversal of 66076473720 is 2737467066.

It is a super-2 number, since 2×66076473720² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66076473720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17236924 + ... + 17240756.

Almost surely, 2^66076473720 is an apocalyptic number.

66076473720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66076473720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100230268320).

66076473720 is an abundant number, since it is smaller than the sum of its proper divisors (134384062920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66076473720 is a wasteful number, since it uses less digits than its factorization.

66076473720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425 (or 5421 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 66076473720 in words is "sixty-six billion, seventy-six million, four hundred seventy-three thousand, seven hundred twenty".